When selecting the right fastener for long-lasting, trouble-free service, considering the corrosion risk factors in the project environment is critical. There are a wide range of available fastener materials and coatings that possess varying levels of corrosion resistance and it is important to identify the right one for the intended environment.
For environments that are at a high risk for corrosion, stainless-steel fasteners are the recommended solution. Simpson Strong-Tie offers an extensive variety of fasteners in types 304/305 and 316 stainless steel that are designed for easy installation and reliable performance.
The information below is intended to clarify which types of stainless-steel fastener materials are suitable for various projects and environments.
Type 304/305 Fasteners: Very Good Corrosion Resistance
Exterior Wood-to-wood applications installed in wet environments or that utilize preservative treated wood.
- Garden projects
- Raised planter beds
- Project involving preservative treated wood
- Agricultural facilities
- Cooling Towers
Deck boards and Structural Fastening near
- Sprinkler systems
- Ground contact
Type 316 Fasteners: Maximum Corrosion Resistance
Exterior Wood-to-wood or wood-based materials involving: Wet Service, Elevated, Ocean and Water Front Environments, Environments prone to chemicals and chlorides.
- Coastal projects
- Projects in saltwater environments
- Projects in areas with de-icing salts
- Boat building
- Marine trade
Search through our wide variety of stainless steel fasteners by type using our Fastener Finder app. Filter for diameter, length, head style, application and host of other criteria that will make it simple to find the best fastening solution for your project.
Always Use Stainless Steel Fasteners with Stainless Steel Connectors
Even with the protection of stainless steel connections, structures in corrosive environments can be compromised over time when these connectors are installed with fasteners or anchors that are not stainless steel. Carbon-steel fasteners and anchors with coatings such as hot-dip galvanization will corrode faster than the stainless steel connectors, creating a weak link that could eventually lead to repairs or failure. Likewise, fasteners or anchors made from lower grades of stainless steel, such as types 304/305 (aka "18-8 stainless"), are also not recommended for use with Simpson Strong-Tie type 316 stainless steel connectors.
Simpson Strong-Tie offers a wide range of type 316 stainless steel connectors and fasteners designed to provide a superior level of protection and durability against corrosive environments and materials.
When it comes to anchorage, selecting a material that can withstand the environment is critical. Proper protection comes from materials that are capable of resisting corrosion while maintaining their strength.
Metal connectors, fasteners and anchors can corrode and lose carrying capacity when installed in corrosive environments or when installed in contact with corrosive materials. Learn more about common corrosion issues.